CN108561466B - Clutch and brake chain tightening device applicable to power part of coal mine underground scraper conveyor - Google Patents

Clutch and brake chain tightening device applicable to power part of coal mine underground scraper conveyor Download PDF

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Publication number
CN108561466B
CN108561466B CN201810425699.4A CN201810425699A CN108561466B CN 108561466 B CN108561466 B CN 108561466B CN 201810425699 A CN201810425699 A CN 201810425699A CN 108561466 B CN108561466 B CN 108561466B
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CN
China
Prior art keywords
clutch
way reversing
reversing valve
oil port
spline
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Active
Application number
CN201810425699.4A
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Chinese (zh)
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CN108561466A (en
Inventor
陈云
涂伟
吴立忠
孔进
傅瑞华
徐魁武
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Ningxia Tiandi Benniu Industrial Group Co Ltd
Ningxia Tiandi Heavy Equipment Technology Co Ltd
Original Assignee
Ningxia Tiandi Benniu Industrial Group Co Ltd
Ningxia Tiandi Heavy Equipment Technology Co Ltd
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Application filed by Ningxia Tiandi Benniu Industrial Group Co Ltd, Ningxia Tiandi Heavy Equipment Technology Co Ltd filed Critical Ningxia Tiandi Benniu Industrial Group Co Ltd
Priority to CN201810425699.4A priority Critical patent/CN108561466B/en
Publication of CN108561466A publication Critical patent/CN108561466A/en
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Publication of CN108561466B publication Critical patent/CN108561466B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D67/00—Combinations of couplings and brakes; Combinations of clutches and brakes
    • F16D67/02—Clutch-brake combinations
    • F16D67/04—Clutch-brake combinations fluid actuated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
    • B65G23/44—Belt or chain tensioning arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0221—Valves for clutch control systems; Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
    • F16D2048/0266—Actively controlled valves between pressure source and actuation cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Braking Arrangements (AREA)

Abstract

The clutch and brake chain tightening device suitable for the power part of the underground coal mine scraper conveyor comprises a coupler, a cover cylinder, a hydraulic brake, a clutch spline set, a clutch oil cylinder and a control unit, wherein the control unit comprises a control valve block, a hydraulic pump, a first oil tank and a second oil tank; aiming at the power part of the underground coal mine scraper conveyor, the hydraulic clutch and brake are realized by utilizing the hydraulic pressure, so that the reliability is high and the safety is higher; the clutch oil cylinder and the hydraulic brake centralize a hydraulic pump to provide power, so that a hydraulic system is simplified, and the operation is convenient; the left, middle and right positions of the three-position four-way reversing valve are matched with the left and right positions of the two-position four-way reversing valve to control the clutch oil cylinder and the hydraulic brake, so that the chain tightening, braking and chain loosening operations are realized, and the operation is safe and simple; in addition, when the three-position four-way reversing valve is in the middle position, the clutch spline group can be effectively limited, dangerous accidents caused by movement of the clutch spline group during chain tightening or normal operation are prevented, and compared with the original design, the corresponding limiting mechanism is omitted.

Description

Clutch and brake chain tightening device applicable to power part of coal mine underground scraper conveyor
Technical Field
The invention relates to the technical field of chain tightening, in particular to a clutch and brake chain tightening device applicable to a power part of a scraper conveyor in a coal mine.
Background
At present, the clutch of the chain tightener of the scraper conveyor is mechanical and can only be manually engaged. The idler pulley of the chain tightener is separated from or meshed with the large gear by pushing the axial sliding of the idler pulley through the handle, but the idler pulley of the chain tightener is separated from the large gear simply, the state of meshing is very difficult to restore, holes for auxiliary installation and observation are needed to be reserved, and the chain tightening process is complex to operate.
Disclosure of Invention
In view of the above, it is desirable to provide a hydraulic clutch brake chain device for a power unit of a scraper conveyor in a coal mine, which is safe and convenient to operate.
The clutch and brake chain tightening device suitable for the power part of the underground coal mine scraper conveyor comprises a coupler, a cover cylinder, a hydraulic brake, a clutch spline group, a clutch oil cylinder and a control unit, wherein the left end part of the coupler is coaxially connected with an output shaft of a variable frequency motor, and the right end part of the coupler is coaxially connected with an input shaft of a speed reducer; the clutch spline group is arranged in the cover cylinder, the clutch spline group is arranged on the cover cylinder and is movably connected with the cover cylinder, the clutch spline group comprises a spline sleeve, the spline sleeve is sleeved at the right end part of the coupler, the clutch spline group can rotate relative to the cover cylinder by taking the axis of the coupler as a rotation center so as to enable the spline sleeve to rotate relative to the cover cylinder by taking the axis of the coupler as the rotation center, the clutch spline group slides leftwards and rightwards along the axis direction of the coupler under the driving of a clutch oil cylinder, the clutch oil cylinder stretches, an inner spline of the spline sleeve is separated from an outer spline of the right end part of the coupler, the clutch oil cylinder contracts, the inner spline of the spline sleeve is meshed with an outer spline of the right end part of the coupler, the clutch oil cylinder stretches or contracts, the outer spline of the spline sleeve is meshed with an inner spline of a hydraulic brake, and the control unit comprises a control valve block, a hydraulic pump, a first oil tank and a second oil tank; the control valve block comprises a three-position four-way reversing valve and a two-position four-way reversing valve, an outlet of the hydraulic pump is communicated with an A1 oil port of the three-position four-way reversing valve, an A2 oil port of the three-position four-way reversing valve is communicated with a rodless cavity oil port of the clutch oil cylinder, a rod cavity oil port of the clutch oil cylinder is communicated with an A3 oil port of the three-position four-way reversing valve, an A4 oil port of the three-position four-way reversing valve is communicated with a first oil tank, an outlet of the hydraulic pump is communicated with a B1 oil port of the two-position four-way reversing valve, a B2 oil port of the two-position four-way reversing valve is communicated with an oil inlet of the brake, a B3 oil port of the two-position four-way reversing valve is plugged by a plug, and a B4 oil port of the two-position four-way reversing valve is communicated with a second oil tank.
Preferably, the control valve block further comprises a bidirectional hydraulic lock, the bidirectional hydraulic lock is arranged between the three-position four-way reversing valve and the clutch oil cylinder, a C1 oil port of the bidirectional hydraulic lock is communicated with an A2 oil port of the three-position four-way reversing valve, a C2 oil port of the bidirectional hydraulic lock is communicated with a rodless cavity oil port of the clutch oil cylinder, a rod cavity oil port of the clutch oil cylinder is communicated with a C4 oil port of the bidirectional hydraulic lock, and a C3 oil port of the bidirectional hydraulic lock is communicated with an A3 oil port of the three-position four-way reversing valve.
Preferably, the control valve block further comprises a flow control valve, and the flow control valve is arranged on a pipeline between a C2 oil port of the bidirectional hydraulic lock and a rodless cavity oil port of the clutch oil cylinder.
Preferably, the control valve block further comprises an overflow valve, one end of the overflow valve is communicated with a pipeline between an outlet of the hydraulic pump and an A1 oil port of the three-position four-way reversing valve, and the other end of the overflow valve is communicated with a pipeline between an A4 oil port of the three-position four-way reversing valve and the first oil tank.
Preferably, the control valve block further comprises a first pressure reducing valve, and the first pressure reducing valve is arranged on a pipeline between an outlet of the hydraulic pump and an A1 oil port of the three-position four-way reversing valve and is positioned between the overflow valve and the three-position four-way reversing valve.
Preferably, the control valve block further comprises a second pressure reducing valve, and the second pressure reducing valve is arranged on a pipeline between an outlet of the hydraulic pump and an A1 oil port of the three-position four-way reversing valve and is positioned between the first pressure reducing valve and the three-position four-way reversing valve.
According to the invention, aiming at the power part of the underground coal mine scraper conveyor, the clutch and the brake are realized by utilizing the hydraulic pressure, so that the reliability is high and the safety is higher; the clutch oil cylinder and the hydraulic brake centralize a hydraulic pump to provide power, so that a hydraulic system is simplified, and the operation is convenient; the left, middle and right positions of the three-position four-way reversing valve are matched with the left and right positions of the two-position four-way reversing valve to control the clutch oil cylinder and the hydraulic brake, so that the chain tightening, braking and chain loosening operations are realized, and the operation is safe and simple; in addition, when the three-position four-way reversing valve is in the middle position, the clutch spline group can be effectively limited, dangerous accidents caused by movement of the clutch spline group during chain tightening or normal operation are prevented, and compared with the original design, the corresponding limiting mechanism is omitted.
Drawings
FIG. 1 is a schematic diagram of a clutch brake chain device for a power section of a scraper conveyor in a coal mine, wherein the clutch spline group is in a disengaged state.
Fig. 2 is a schematic structural view of a clutch brake chain device of a power part of a scraper conveyor in a coal mine, which is in an engaged state with a clutch spline group.
FIG. 3 is a schematic diagram showing the connection relation between a clutch brake chain tightening device and a variable frequency motor and a speed reducer of a power part of a scraper conveyor in a coal mine.
Fig. 4 is a schematic diagram of the control unit.
Fig. 5 is a schematic view of a specific hydraulic brake.
Fig. 6 is a schematic view of the shaft extension of a specific coupling.
In the figure: the clutch comprises a coupling 10, a shaft extension 11, a protrusion 111, a guide end 1111, a cover cylinder 20, a hydraulic brake 30, a shell 31, a dynamic friction plate 32, a static friction plate 33, an elastic element 34, a clutch spline group 40, a spline housing 41, a groove 411, a guide groove 4111, a clutch cylinder 50, a control unit 60, a control valve block 61, a three-position four-way reversing valve 611, a two-position four-way reversing valve 612, a plug 6121, a bidirectional hydraulic lock 613, a flow control valve 614, an overflow valve 615, a first pressure reducing valve 616, a second pressure reducing valve 617, a hydraulic pump 62, a first oil tank 63, a second oil tank 64, a motor 70 and a speed reducer 80.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Referring to fig. 1 to 4, an embodiment of the present invention provides a clutch brake chain tightening device applicable to a power section of a scraper conveyor in a coal mine, the device comprises a coupler 10, a cover cylinder 20, a hydraulic brake 30, a clutch spline set 40, a clutch cylinder 50 and a control unit 60, wherein the left end of the coupler 10 is coaxially connected with an output shaft of a variable frequency motor 70, and the right end of the coupler 10 is coaxially connected with an input shaft of a speed reducer 80; the clutch spline set 40 is mounted on the cover cylinder 20 and is movably connected with the cover cylinder 20, the clutch spline set 40 comprises a spline sleeve 41, the spline sleeve 41 is sleeved at the right end part of the clutch 10, the clutch spline set 40 can rotate relative to the cover cylinder 20 by taking the axis of the clutch 10 as a rotation center, so that the spline sleeve 41 rotates relative to the cover cylinder 20 by taking the axis of the clutch 10 as the rotation center, the clutch spline set 40 slides leftwards and rightwards along the axis direction of the clutch 10 under the driving of the clutch oil cylinder 50, the clutch oil cylinder 50 stretches, an inner spline of the spline sleeve 41 is separated from an outer spline of the right end part of the clutch 10, the clutch oil cylinder 50 contracts, the inner spline of the spline sleeve 41 is meshed with an outer spline of the right end part of the clutch oil cylinder 10, the outer spline of the spline sleeve 41 is meshed with an inner spline of the hydraulic brake 30, and the control unit 60 comprises a control valve block 61, a hydraulic pump 62, a first oil tank 63 and a second oil tank 64; the control valve block 61 comprises a three-position four-way reversing valve 611 and a two-position four-way reversing valve 612, wherein an outlet of the hydraulic pump 62 is communicated with an A1 oil port of the three-position four-way reversing valve 611, an A2 oil port of the three-position four-way reversing valve 611 is communicated with a rodless cavity oil port of the clutch oil cylinder 50, a rod cavity oil port of the clutch oil cylinder 50 is communicated with an A3 oil port of the three-position four-way reversing valve 611, an A4 oil port of the three-position four-way reversing valve 611 is communicated with the first oil tank 63, an outlet of the hydraulic pump 62 is communicated with a B1 oil port of the two-position four-way reversing valve 612, a B2 oil port of the two-position four-way reversing valve 612 is communicated with an oil inlet of a brake, a B3 oil port of the two-position four-way reversing valve 612 is blocked by a plug 6121, and a B4 oil port of the two-position four-way reversing valve 612 is communicated with the second oil tank 64.
Before chain tightening, the three-position four-way reversing valve 611 is operated to enable the clutch oil cylinder 50 to act, the hydraulic brake 30 enters an operating state, the clutch oil cylinder 50 drives the clutch spline group 40 to slide, the internal spline of the clutch spline group 40 is meshed with the external spline of the coupling 10 group, the three-position four-way reversing valve 611 returns to the middle position after the clutch oil cylinder 50 is in place, when the chain is tightened by the low-speed operation of the motor 70, the two-position four-way reversing valve 612 is operated to start the hydraulic brake 30 to brake the motor 70 and stop the motor 70 to prevent reverse rotation, at this time, the chain tightening operation is carried out, the two-position four-way reversing valve 612 is reset after the chain tightening operation is completed, the hydraulic brake 30 is reset, the chain is naturally loosened, the three-position four-way reversing valve 611 is operated again to enable the clutch oil cylinder 50 to act, the clutch oil cylinder 50 drives the clutch spline group 40 to slide, the internal spline of the clutch spline group 40 is disconnected from the external spline of the coupling 10 group, and the scraper conveyor normally works, and the chain tightening operation is completed.
Specifically, the clutch spline set 40 is composed of a spline housing 41 and a combined bearing block, the spline housing 41 slides in an internal spline of the hydraulic brake 30 and an external spline of the coupling 10, the combined bearing block slides on the cover cylinder 20, and the inner bearing block and the outer bearing block of the combined bearing block relatively rotate.
According to the invention, aiming at the power part of the underground coal mine scraper conveyor, the clutch and the brake are realized by utilizing the hydraulic pressure, so that the reliability is high and the safety is higher; the clutch cylinder 50 and the hydraulic brake 30 are centralized with one hydraulic pump 62 to provide power, so that a hydraulic system is simplified, space is saved, the operation is safe and simple, the left, middle and right positions of the three-position four-way reversing valve 611 are matched with the left and right positions of the two-position four-way reversing valve 612 to control the clutch cylinder 50 and the hydraulic brake 30, and the chain tightening, braking and chain loosening operations are realized, so that the operation is safe and simple; in addition, when the three-position four-way reversing valve 611 is in the middle position, the clutch spline set 40 can be effectively limited, dangerous accidents caused by the movement of the clutch spline set 40 during chain tightening or normal operation can be prevented, compared with the original design, the novel three-position four-way reversing valve has the advantages that the structure is compact and reasonable, the clutch is driven by hydraulic pressure to operate, the braking reaction of the clutch is quicker, the working intensity of operators can be relieved, and the working efficiency is improved.
Referring to fig. 4, further, the control valve block 61 further includes a bidirectional hydraulic lock 613, the bidirectional hydraulic lock 613 is disposed between the three-position four-way reversing valve 611 and the clutch cylinder 50, a C1 oil port of the bidirectional hydraulic lock 613 is communicated with an A2 oil port of the three-position four-way reversing valve 611, a C2 oil port of the bidirectional hydraulic lock 613 is communicated with a rodless cavity oil port of the clutch cylinder 50, a rod cavity oil port of the clutch cylinder 50 is communicated with a C4 oil port of the bidirectional hydraulic lock 613, and a C3 oil port of the bidirectional hydraulic lock 613 is communicated with an A3 oil port of the three-position four-way reversing valve 611.
When the three-position four-way reversing valve 611 is in the middle position, the safety of the system can be doubly protected by utilizing the bidirectional hydraulic lock 613, and dangerous accidents caused by movement of the clutch spline set 40 during chain tightening or normal operation are prevented.
Referring to fig. 4, the rodless cavity port is a D1 port, the rod cavity port is a D2 port, and further, the control valve block 61 further includes a flow control valve 614, and the flow control valve 614 is installed on a pipeline between the C2 port of the bidirectional hydraulic lock 613 and the rodless cavity port of the clutch cylinder 50.
The flow control valve 614 can be used to control the speed of the actuator, so that the clutch process is stable and soft, and the damage of engagement and fit caused by excessive engagement impact force of the spline housing 41 and the coupler 10 is avoided.
Referring to fig. 4, further, the control valve block 61 further includes a relief valve 615, one end of the relief valve 615 is in communication with a pipe between the outlet of the hydraulic pump 62 and the A1 port of the three-position four-way reversing valve 611, and the other end of the relief valve 615 is in communication with a pipe between the A4 port of the three-position four-way reversing valve 611 and the first tank 63.
Referring to fig. 4, further, the control valve block 61 further includes a first pressure reducing valve 616, and the first pressure reducing valve 616 is installed on a pipe between an outlet of the hydraulic pump 62 and an A1 port of the three-position four-way reversing valve 611, and between the overflow valve 615 and the three-position four-way reversing valve 611.
Referring to fig. 4, further, the control valve block 61 further includes a second pressure reducing valve 617, and the second pressure reducing valve 617 is installed on a pipe between an outlet of the hydraulic pump 62 and an A1 port of the three-position four-way reversing valve 611, and is located between the first pressure reducing valve 616 and the three-position four-way reversing valve 611.
Referring to fig. 5, a specific structure of the hydraulic brake 30, the connection relationship with the coupling 10 and the spline housing 41, and the braking process are shown below.
For example, the hydraulic brake 30 includes a housing 31, a movable friction plate 32, and a static friction plate 33, the housing 31 is disk-shaped, the interior is hollow, the housing 31 is fixedly mounted inside the casing 20, the movable friction plate 32 and the static friction plate 33 are built in the housing 31, external splines of the movable friction plate 32 are engaged with external splines of the spline housing 41, and external splines of the static friction plate 33 are engaged with internal splines on the annular wall inside the housing 31; the hydraulic pump 62 drives the elastic element 34 to stretch and contract, the elastic element 34 pushes the static friction plate 33 to move to one side of the dynamic friction plate 32 along the axial direction of the shell 31 and is attached to the dynamic friction plate 32 to rub against the dynamic friction plate 32, so that the dynamic friction plate 32 is prevented from rotating, the spline housing 41 is prevented from rotating again, the spline housing 41 prevents the coupler 10 from rotating, braking is achieved, interlocking can be formed between the multiple groups of dynamic friction plates 32 and the static friction plate 33, and accidents are caused by rapid reverse rotation of the coupler 10 under the condition that the hydraulic pump 62 is temporarily out of pressure.
Referring to fig. 6, a specific structure of the coupling 10 is further provided below, and the external spline of the coupling 10 is connected with the internal spline of the spline housing 41.
For example, the end of the coupling 10 connected with the spline housing 41 is a brake end, the brake end is an axial extension 11 with a free end, a protrusion 111 is arranged at the other end of the axial extension 11 far away from the free end, the protrusion 111 is in a flat strip shape, the cross section of the protrusion 111 is rectangular, a plurality of protrusions 111 are uniformly distributed on the outer annular wall of the axial extension 11 along the circumferential direction of the axial extension 11, the length direction of the protrusions 111 is parallel to the axial direction of the axial extension 11, the protrusions 111 are provided with a guide end 1111, the guide end 1111 is arranged near the free end of the axial extension 11, the cross section of the guide end 1111 is gradually reduced while the guide end 1111 extends towards the free end of the axial extension 11, a groove 411 matched with the shape of the protrusion 111 of the axial extension 11 is arranged on the inner annular wall of the spline housing 41, the groove 411 is also provided with a guide groove 4111, the guide groove 4111 is arranged on the left side of the spline housing 41, and the cross section of the guide groove 4111 is gradually increased while the guide groove 4111 extends leftwards along the axial direction of the spline housing 41.
The spline housing 41 moves rightwards along the axial direction of the shaft extension 11, the coupling 10 is separated from the spline housing 41, the spline housing 41 moves leftwards along the axial direction of the shaft extension 11, the guide groove 4111 of the spline housing 41 is firstly meshed with the guide end 1111, the cross section area of the right end part of the guide end 1111 is far smaller than that of the left end part of the guide groove 4111, even if the groove 411 of the spline housing 41 deviates from the boss 111 of the shaft extension 11, the end part of the guide end 1111 can also be inserted into the guide groove 4111, the spline housing 41 continues to move leftwards, the spline housing 41 rotates in a circle Xiang Xiao under the action of the guide end 1111 and the guide groove 4111, then the groove 411 of the spline housing 41 is tightly meshed with the boss 111 of the shaft extension 11, and the guide groove 4111 arranged by the guide end 1111 and the spline housing 41 is arranged on the shaft extension 11, so that the difficulty of tooth alignment of the spline housing 41 and the shaft extension 11 is reduced, and rapid tooth alignment can be realized.
The modules or units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs.
The foregoing disclosure is illustrative of the preferred embodiments of the present invention, and is not to be construed as limiting the scope of the invention, as it is understood by those skilled in the art that all or part of the above-described embodiments may be practiced with equivalents thereof, which fall within the scope of the invention as defined by the appended claims.

Claims (6)

1. The utility model provides a be applicable to colliery scraper conveyor power portion separation and reunion braking chain tensioner in pit which characterized in that: the device comprises a coupler, a cover cylinder, a hydraulic brake, a clutch spline set, a clutch oil cylinder and a control unit, wherein the left end part of the coupler is coaxially connected with an output shaft of a variable frequency motor, and the right end part of the coupler is coaxially connected with an input shaft of a speed reducer; the clutch spline group is arranged in the cover cylinder, is movably connected with the cover cylinder, consists of a spline sleeve and a combined bearing seat, the spline sleeve slides in an inner spline of the hydraulic brake and an outer spline of the coupler, the combined bearing seat slides on the cover cylinder, an inner bearing seat and an outer bearing seat of the combined bearing seat rotate relatively, the spline sleeve is sleeved on the right end part of the coupler, the clutch spline group can rotate relative to the cover cylinder by taking the axis of the coupler as a rotation center, so that the spline sleeve rotates relative to the cover cylinder by taking the axis of the coupler as the rotation center, the clutch spline group slides leftwards and rightwards along the axis direction of the coupler under the driving of a clutch oil cylinder, the clutch oil cylinder stretches, an inner spline of the spline sleeve is separated from an outer spline of the right end part of the coupler, the clutch oil cylinder contracts, the inner spline of the spline sleeve is meshed with the outer spline of the right end part of the coupler, the clutch oil cylinder stretches or contracts, the outer spline of the spline sleeve is meshed with the inner spline of the hydraulic brake, and the control unit comprises a control valve block, a first oil tank and a second hydraulic pump; the control valve block comprises a three-position four-way reversing valve and a two-position four-way reversing valve, an outlet of the hydraulic pump is communicated with an A1 oil port of the three-position four-way reversing valve, an A2 oil port of the three-position four-way reversing valve is communicated with a rodless cavity oil port of the clutch oil cylinder, a rod cavity oil port of the clutch oil cylinder is communicated with an A3 oil port of the three-position four-way reversing valve, an A4 oil port of the three-position four-way reversing valve is communicated with a first oil tank, an outlet of the hydraulic pump is communicated with a B1 oil port of the two-position four-way reversing valve, a B2 oil port of the two-position four-way reversing valve is communicated with an oil inlet of the brake, a B3 oil port of the two-position four-way reversing valve is plugged by a plug, and a B4 oil port of the two-position four-way reversing valve is communicated with a second oil tank.
2. The clutch and brake chain device for a power part of a scraper conveyor in a coal mine, as claimed in claim 1, wherein: the control valve block further comprises a bidirectional hydraulic lock, wherein the bidirectional hydraulic lock is arranged between the three-position four-way reversing valve and the clutch oil cylinder, a C1 oil port of the bidirectional hydraulic lock is communicated with an A2 oil port of the three-position four-way reversing valve, a C2 oil port of the bidirectional hydraulic lock is communicated with a rodless cavity oil port of the clutch oil cylinder, a rod cavity oil port of the clutch oil cylinder is communicated with a C4 oil port of the bidirectional hydraulic lock, and a C3 oil port of the bidirectional hydraulic lock is communicated with an A3 oil port of the three-position four-way reversing valve.
3. The clutch and brake chain device for a power part of a scraper conveyor in a coal mine as claimed in claim 2, wherein: the control valve block also comprises a flow control valve which is arranged on a pipeline between the C2 oil port of the bidirectional hydraulic lock and the rodless cavity oil port of the clutch oil cylinder.
4. A clutch brake chain tensioner for a power section of a scraper conveyor in a coal mine as claimed in claim 3, wherein: the control valve block further comprises an overflow valve, one end of the overflow valve is communicated with a pipeline between an outlet of the hydraulic pump and an A1 oil port of the three-position four-way reversing valve, and the other end of the overflow valve is communicated with a pipeline between an A4 oil port of the three-position four-way reversing valve and the first oil tank.
5. The clutch and brake chain device for a power part of a scraper conveyor in a coal mine, as claimed in claim 4, wherein: the control valve block further comprises a first pressure reducing valve, wherein the first pressure reducing valve is arranged on a pipeline between an outlet of the hydraulic pump and an A1 oil port of the three-position four-way reversing valve and is positioned between the overflow valve and the three-position four-way reversing valve.
6. The clutch and brake chain device for a power part of a scraper conveyor in a coal mine, as claimed in claim 5, wherein: the control valve block further comprises a second pressure reducing valve, and the second pressure reducing valve is arranged on a pipeline between an outlet of the hydraulic pump and an A1 oil port of the three-position four-way reversing valve and is positioned between the first pressure reducing valve and the three-position four-way reversing valve.
CN201810425699.4A 2018-05-07 2018-05-07 Clutch and brake chain tightening device applicable to power part of coal mine underground scraper conveyor Active CN108561466B (en)

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Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
CN113357213A (en) * 2021-06-15 2021-09-07 贵州凯星液力传动机械有限公司 Clutch and oil cylinder integrated control hydraulic system
CN113417997B (en) * 2021-07-02 2023-01-20 贵州凯星液力传动机械有限公司 Clutch and oil cylinder integrated control hydraulic system

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513902A (en) * 1993-05-19 1996-05-07 Westfalia Becorit Industrietechnik Gmbh Driving system for driving flexible elongate members, such as chains or scraper-chain assemblies, in mineral mining installations and method of operating
CN201696044U (en) * 2010-06-29 2011-01-05 太原矿山机器集团有限公司 Hydraulic system of coal winning machines
CN102256840A (en) * 2008-12-16 2011-11-23 株式会社小松制作所 Brake device lubrication device and method for controlling same
CN102729972A (en) * 2012-06-11 2012-10-17 南京理工大学 Hydraulically-controlled electronic parking executing mechanism
CN102927176A (en) * 2012-10-25 2013-02-13 霍州煤电集团有限责任公司李雅庄煤矿 Pressure-adjustable braking device for safely taking up and paying off belt in inclined shaft
CN104500485A (en) * 2014-12-25 2015-04-08 柳工无锡路面机械有限公司 Hydraulic system for floating of scraper of pavement milling machine
CN105020188A (en) * 2015-07-16 2015-11-04 陕西朗浩传动技术有限公司 Fully-hydraulic automatic control system and automatic scraper conveyor telescopic tail with same
CN205315374U (en) * 2015-12-22 2016-06-15 徐州徐工环境技术有限公司 Swing arm formula compression garbage truck hydraulic control system
CN105822616A (en) * 2016-05-23 2016-08-03 迈安德集团有限公司 Driving control system of loop type extractor
CN106144937A (en) * 2016-08-16 2016-11-23 武汉船用机械有限责任公司 Band brake hydraulic emergency system
CN205895726U (en) * 2016-07-28 2017-01-18 都兰金辉矿业有限公司 Mining scraper conveyor tensioning hydraulic control system
CN208503320U (en) * 2018-05-07 2019-02-15 宁夏天地奔牛实业集团有限公司 Suitable for underground coal mine scraper conveyor power part clutch and brake chain tightener

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513902A (en) * 1993-05-19 1996-05-07 Westfalia Becorit Industrietechnik Gmbh Driving system for driving flexible elongate members, such as chains or scraper-chain assemblies, in mineral mining installations and method of operating
CN102256840A (en) * 2008-12-16 2011-11-23 株式会社小松制作所 Brake device lubrication device and method for controlling same
CN201696044U (en) * 2010-06-29 2011-01-05 太原矿山机器集团有限公司 Hydraulic system of coal winning machines
CN102729972A (en) * 2012-06-11 2012-10-17 南京理工大学 Hydraulically-controlled electronic parking executing mechanism
CN102927176A (en) * 2012-10-25 2013-02-13 霍州煤电集团有限责任公司李雅庄煤矿 Pressure-adjustable braking device for safely taking up and paying off belt in inclined shaft
CN104500485A (en) * 2014-12-25 2015-04-08 柳工无锡路面机械有限公司 Hydraulic system for floating of scraper of pavement milling machine
CN105020188A (en) * 2015-07-16 2015-11-04 陕西朗浩传动技术有限公司 Fully-hydraulic automatic control system and automatic scraper conveyor telescopic tail with same
CN205315374U (en) * 2015-12-22 2016-06-15 徐州徐工环境技术有限公司 Swing arm formula compression garbage truck hydraulic control system
CN105822616A (en) * 2016-05-23 2016-08-03 迈安德集团有限公司 Driving control system of loop type extractor
CN205895726U (en) * 2016-07-28 2017-01-18 都兰金辉矿业有限公司 Mining scraper conveyor tensioning hydraulic control system
CN106144937A (en) * 2016-08-16 2016-11-23 武汉船用机械有限责任公司 Band brake hydraulic emergency system
CN208503320U (en) * 2018-05-07 2019-02-15 宁夏天地奔牛实业集团有限公司 Suitable for underground coal mine scraper conveyor power part clutch and brake chain tightener

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